Vndr is simple vendoring tool, which is inspired by docker vendor script. Vndr has no options. For initiating you will need config vendor.conf with lines like:

# Import path             | revision                               | Repository(optional)
github.com/example/example 03a4d9dcf2f92eae8e90ed42aa2656f63fdd0b14 https://github.com/LK4D4/example.git

Just set $GOPATH and run vndr in your repository with vendor.conf. Repository field is used for vendoring forks instead of original repos.

Also it's possible to vendor only one dependency after initial vendoring:

vndr github.com/example/example 03a4d9dcf2f92eae8e90ed42aa2656f63fdd0b14 https://github.com/LK4D4/example.git

or

vndr github.com/example/example

to take revision and repo from vendor.conf.

If you experience any problems, please try to run vndr -verbose.

• vndr vendors only top packages, i.e. golang.org/x/net and not golang.org/x/net/trace. If there is "non-top" packages in vendor.conf, vndr might fail badly.
• if you use symlinks for managing GOPATH or packages in it, vndr might not be able to work properly.